Electric-lighting apparatus for railway-cars.



No. 628658. 4 Patentd Iuly Il, i899. C. A. GDULD.

:ELECTBILIGHTING APPARATUS FOR RAILWAY CARS.

(Appximion med my 7, fees.) ;(No Model.) 2 Sheets-Sheet l.

Tm: Norms Patins m, PHGToMTHo WASHINGTON. u. c.

No. 628,653. Patented .IuIy II, |899. C. A. GULD.

ELECTRIC LIGHTING APPARATUS FOR RAILWAY CARS.

(Appnmion med my 7, 189s.)

2 Sheets-Sheet 2.

(No Model.)

.wfwmw UNITED STATES PATENT OFFICE.

ACHARLES A. GOULD, OF NEW YORK, N. Y.

ELECTRIC-L-IGHTlNG APPARATUS FOR RAILWAY-CARS...

SPECIFICATON forming part of Letters Patent No. 628,658, dated July 1 1,1899.

Application filed July '7,1898- Serial Nor 685,306. (No modelJ yTo @ZZ'Ll/hom, t 71mg/ conce/vt:

Be it known that I, CHARLES A. GOULD, a citizen of the United States,and a resident of New York7 in the county and State of New York, haveinvented a new and useful Improvement in Electric-Lighting Apparatus forRailway Cars, of which the following is a specification.

This invention relates to that class of eleotric-lighting apparatus forrailway-cars in which the dynamo is driven from the car-axle by a beltand the dynamo is movable toward and from the drivin g-aXle, so that thebelt slips when the speed of the driving-axle exceeds that which isnecessary to properly drive the dynamo, thereby neutralizing any excessof speed and maintaining` a practically uniform normal speed of thedynamo. To enable the dynamo to be ettectually actuated with such adriving-belt, it is necessary to placeA the dynamo directly over thedrivingaxle, so that upon loosening the belt, which is substantiallyvertical, it moves out of contact with the under side of the pulley onthe driving-axle. Vhen the dynamo is arranged in this manner, thevertical vibrations of the car alternately stretch and loosen thedrivingbelt, causing `the dynamo to be driven at a variable instead of auniform speed and producing an unsteady light.

The object of my invention is to mount the dynamo on the car in suchmanner thatit remains at all times practically in the same relativeposition to the car-axle notwithstanding the vibrations of the car,thereby keeping a uniform tension on the belt and maintaining a uniformnormal speed of the dynamo.

In the accompanying drawings, consisting of two sheets, Figure l is asectional side elevation of a dynamo mounted on a car in accordance withmyinvention. Fig. 2 is an end elevation, partly in section, lookingtoward the dynamo. Fig. 3 is a top plan View of the dynamo and theadjacent portion of the car. Fig. 4 isa cross-section in line i 4, Fig.l.

Like letters of reference refer to like parts in the several gures.

Ais the car-frame; A', the lloor ofthe car; B, one of the car-axles, andB one of the wheels mounted thereon.

C is the dynamo, mounted on the car-body Iabove the axle B andpreferably arranged within the car.

c is the armature-shaft, having the drivingpulley c, and D the uprightdriving-belt running around the pulley of the armature-shaft and apulley D', secured to the car-axle B and passing through openin gs inthe car-Hoor, as shown. The dynamo is capable of moving verticallytoward and from the oar-axle, and in the construction shown in thedrawings the same is arranged to slide between upright guides orstandards E, secured to the cartloor, tour such standards beingpreferably employed and the dynamo being provided at its four cornerswith grooved guide-rollers e, which run on the rails of the guides E andwhereby the friction is reduced to a minimum.

F represents springs which yieldingly support the dynamo, so as to allowit to maintain its proper position under the vibrations of the car. Oneof these springs is arranged vertically at each end of the dynamo, andthe springs are inclosed by upright telescopic cylinders G, the uppersections g of which are formed on or secured to the dynamo-frame, whiletheir lower sectionsg' are mounted on upright adjusting-screws H,whereby the cylinders can be shortened or lengthened, so as to increaseor diminish the tension ot the springs for regulating the tension of thebelt or loosening the samewhen it is desired to stop the dynamo. Theadjusting-screws H are provided at their lower ends with collars orsprocket wheels h, which are confined against vertical movement bysuitable means, and the screws engage with screw-threaded openingsformed in the closed lower end of the lower cylinder-sections g', sothat upon turning these screws in one or the other direction the lowercylinder-sections are caused to move vertically in the uppercylinder-sections, thereby moving the dynamo away from the driving-axleor allowing the same to move by gravity toward the axle. The lowercylinder-seotions, while free to slide in the upper sections, are heldagainst turning in the saine by a longitudinal feather and featherwayformed on the respective parts, as shown in Fig. fi. The twoadjusting-screws are connected together by a horizontal belt orsprocket-chain I, running around their actuating- IOO wheels 7L, so thatupon turning one of the screws bot-h screws are adjusted simultaneouslyand the dynamo is raised or lowered uniformly at both ends. One of thescrews is extended upwardly through the adjacent cylinder G and itsprojecting end is made square or fiat-sided to receive a suitable wrenchfor turning` it. Upon turning this screw forwardly the lowercylinder-sections are caused to rise on the screws, thereby increasingthe tension of the springs and that of the driving-belt, while uponturning the screws backwardly the lower cylinder-sections are caused todescend on the screws, thus diminishing the tension of the springs andof the driving-belt. When it is desired to stop the dynamo, the belt isloosened sufficiently to allow it to fall away from the under side ofthe pulley on the driving-axle. 3y this construction the belt can notonly be tensioned foralways driving the dynamo at the proper normalspeed, but the dynamo is cushioned or yieldingly supported, so as to beunail'ected by the vertical vibrations of the car, thus allowing thedynamo to accommodate itself to the vertical movements of the carwithout materially affecting the tension of the belt when once adjustedand insuring a uniform output of the dynamo and a correspondingly steadylight.

l claim as my inventionl. The combination with a railway-car having oneof its axles provided with a pulley, of a dynamo yieldingly mounted onthe car above said axle, so as to be capable of moving vertically towardand from the same, and a drivingbelt running around said pulley and thepulley of the dynamo-shaft, substantially as set forth.

2. The combination with a car-body having upright guides arranged aboveone of the axles of the car, of a dynamo sliding on said guides, aspring or springs which tend to move said dynamo away from said axle,and a driving-belt for transmitting motion from said ear-axle to thedynamo-shaft, substantially as set forth.

fitness my hand this lith day of June, 1898.

CHARLES A. GOULI).

Witnesses:

CHARLES M. Go'ULn, Cassius W. GoULn.

